| Molecular Formula | C32H20N4Na2O8S2 |
| Molar Mass | 698.63274 |
| Storage Condition | Room Temprature |
| Physical and Chemical Properties | Soluble in water is orange-red, soluble in ethanol is orange, soluble in acetone and glycol ether. The addition of concentrated hydrochloric acid to the aqueous solution produces a reddish brown precipitate; the addition of concentrated sodium hydroxide solution is red, orange and brown. The dye is reddish-purple in concentrated sulfuric acid and dark pink after dilution; it is dark blue-red in concentrated nitric acid, and then turns into orange. |
| Use | Mainly used for leather, paper and other dyeing |
| RTECS | GC5787480 |